Lis, A., Kawałkiewicz, W. and Kubisz, L. 2023. A comparison of the efficacy of reducing the signs of ageing in the neck skin after polynucleotides injections in regimens with different dosing intervals – a case study. Journal of Face Aesthetics. 6, 1 (Jun. 2023), 28–45. DOI:https://doi.org/10.20883/jofa.68.